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Neptune in Orbiter
Name Neptune
Reference body Sun
Number of satellites
Planetary mean orbits
Epoch J2000 (1 January 2000)
Semimajor axis (a) 30.06896348 AU
(4.49825291×1012 km)
Eccentricity (e) 0.00858587
Inclination (i) 1.76917°
(0.0308778 radian)
Longitude of the ascending node (LAN, ☊) 131.72169°
(2.298977 radian)
Longitude of periapsis (ϖ) 44.97135°
(0.784898 radian)
Mean longitude (L) 304.88003°
(5.321160 radian)
Planetary orbital element centennial rates
Semimajor axis (a) -0.00125196 AU/Century
Eccentricity (e) 0.0000251 Century-1
Inclination (i) -3.64 seconds/Century
Longitude of the ascending node (LAN, ☊) -151.25 seconds/Century
Longitude of periapsis (ϖ) -844.43 seconds/Century
Mean longitude (L) 786449.21 seconds/Century
Selected physical parameters
Mean radius 24624.0±21 km
Mass 1.024569×1026 kg
Density 1.638 g/cm3
Sidereal rotation period 16.11±0.01 hours
Sidereal orbit period 163.72321 years
Magnitude V(1,0) -6.87
Geometric albedo 0.41
Equatorial gravity 11.00±0.05 m/s2
Escape velocity 23.5 km/s
Rotation elements
North pole right ascension (α1) 295.25°
North pole declination (δ1) 40.63°
Obliqutiy of ecliptic 29.48°
Longitude of Sun's transit 221.13°
Atmospheric parameters
Surface Pressure >>104 kPa
Surface Density ~0.45 kg/m3 at 1 bar
Scale height 19.1-20.3 km
Average temperature ~58 K
Wind speeds 0-200 m/s
Ecliptic position from primary*
Note *Elements given are from Orbiter.pdf (2016)

Neptune is the 8th planet from the Sun. It has 14 known natural satellites.

see also: Wikipedia [1]

Go to Addons for Neptune

Natural satellites[edit]